油气开采板块9月3日跌0.66%，蓝焰控股领跌，主力资金净流出1.62亿元

Group 1 - The oil and gas extraction sector experienced a decline of 0.66% on September 3, with Blue Flame Holdings leading the drop [1] - The Shanghai Composite Index closed at 3813.56, down 1.16%, while the Shenzhen Component Index closed at 12472.0, down 0.65% [1] - Specific stock performance in the oil and gas extraction sector included *ST Xinchao at 4.11 with no change, Yushuang Tuwang at 26.24 down 0.53%, Intercontinental Oil and Gas at 2.27 down 2.16%, and Blue Flame Holdings at 6.82 down 2.57% [1] Group 2 - The net capital outflow from the oil and gas extraction sector amounted to 162 million yuan, while retail investors saw a net inflow of 163 million yuan [2] - The overall capital flow in the oil and gas extraction sector indicates a mixed sentiment among different investor types [2]